Phonograph



E. C. OLIVER.

PHONOGRAPH.

APPLICATION HLED MAY 12. I919.

Patented Mar. 14, '1922.

2 SHEETSSHEET 1.

111s Arm/ME).

E. C. OLIVER.

PHONOGRAPH.

APPLICATION FILED MAY 12, 1919.

a. R. m mm mm m mwflm Mm flflm a m n h D E UNITED STATES EDD C. OLIVER, OF ADRIAN, MICHIGAN.

PHONOGRAPH.

Application filed May T 0 (all whom it may concern Be it known that I, Eon C. OLIVER, a citi zen of the United States, residing at Adrian, county of Lenawee, State of Michigan, have invented a certain new and useful Improve ment in Phonographs, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference bein had to the accompanying drawings, which form a part of this specification.

My invention relates to phonographs and an object of my improvement-s is to provide an improved starting and stopping mechanism for the disk and to assure that the record shall be completely traversed by the needle and at a uniform rate.

at its peripheral edge, which is shown in v sect-ion.

Figure 3 is a detail sectional view on the line III-J11 Fig. 2.

Figure 4: is a detail section on the line IV-IV Fig. 8.

Figure 5 is a view ofthe lower portion of V Figure 3 showing the actuating finger in a different position from that of Figure at.

Figure 6 is a view similar to Fig. 2, the parts being shown adjusted to a different position.

Figure '7 is a detail sectional view on the line VIL-VII Fig. 2.

Figure 8 is a detail sectional view on the line VIII-VIII Fig. 6.

Figure 9 is a perspective view ping pawl.

Figure 10 is a perspective view of the bellcrank disengaging lever. Y

Figure 11 is a detail section on the line XI-XI Fig. 6.

of the tripw is the table and a is the record-carrying disk carried by the table a: and adapted to rotate about an axis a? thereon. a is a peripheral flange extending downward around the edge of the disk a.

7) is the tone-arm carrying the needle at its free end adapted to turn about an axis Z1 to carry the needle I) over the record upou Specincation of Letters Patent.

Patented Mar. 14, 192.2. 1919. Serial No. 296,319.

the dish a. c is a flexible metal band passing around the arm 7) located thereon be tween the disk aand the pivot of said arm, and adapted to be clamped in position by a screw and lugs c Fig. 4) in a usual War. (Z is a U-shaped strip of metal having its cross piece secured to the arm I) by the band 0 passing over said cross piece. (5 (Z are parallel 'downwardly-extending branches of the U-piece, or strip, (Z. (Z is a cylindrical rod, or pin, having its end secured in the branches (Z (Z and extending between said branches. 6 is a flat arm pivoted upon the pin (Z and having its side resting against the innersurface of one of the arms 55'. e is a compression spring threaded over the pin (Z and acting to force the arm 6 against its adjacent branch (Z of the U-piece (Z. By this construction the arm 0 may be turned about the pivot d by using some little force, but it is held in any position to which it is adjusted by the friction due to the pressure of the spring 6 unless a sufficient force is brought upon it to overcome said friction. The lower end of the arm 5 extends in the neighborhood of the surface of the table 00.

7 is a metal plate adapted to besecured to the surface of the table :20 within the downwardly extending flange a of the record carrying table a. v

g is a lever arm pivoted to the plate 7 and having a handle g extending outside of the flange a in position to be manipulated by the operator. 9 is a contact pad, or brake, located upon an offset from the lever g. g is a tension spring secured at one end to a lug f rising from the plate f and at the other end to an eccentric lug on the lever arm 9 so that said spring will normally turn the lever 9 about its pivot g and bring the pad 9 into contact with the inner surface of the flange a so as to hold the disk a from rotation. g is a lug extending from the lever arm 9.

71, is a lever arm pivoted at k to the disk f and provided with a tooth h adapted to engage the lug 9* to form a catch for holding the lever g in the position shown in Fig. 2 with the pad 9 out of contact with the flange a j is a bell-crank lever pivoted at 3' to the plate f and having an arm or handle j ex- "ending to a point outside of the flange a of the disk (4 and having a second arm j extending into position to engage the arm 71-.

71 is suring secured at one end to an eccenver arm it is bent over at its outer end at h 7 so as to limit the outward motion of the arm in Fig. 6,in full lines. The arm 7L engaging 7 triclug on the lever arm h and at the other located toward the end of said arm. The lej". j is a shoulder on the outer edge of the lever arm 7' at the con'mrencement of the elevated portion. 7 7 r I The shoulder a extends into the line of travel of the arm 7' so as to limit the inward motion of said arm by contacting the edge of thesame.

The arm j Where it extends outside of the flange a is located in the path of travel of the arm 6 when the latter is carried by the tone-arm b to the inward limit of its travel.

6 is a lug secured upon the table 00 at a position outside of the operative travel of the tone-arm b but in position to engage the arm 6 when the tone-arm Z) is turned outward beyond its working position so as to turn the arm 6 inward as shown in Fig. 5 at which position said arm is held by its friction against the U-piece (Z.

The operation of the above described device is as follows:

In the inoperative condition of the phonograph the arm y' has been disengaged from the arm h and the latter has been drawn to the position in which the tooth [L7 is outside ofthe line of travel of the lug g of the leinner ver g. In this position of the parts thespring 9 has rotated the lever 9 about its pivot g bringing the pad g forcibly againstthe flange a and preventing the motion of therecord-carrying disk at.

The position of the parts are then as shown the elevated surface j and holding the arm .j -in-the position indicated by full lines in said figure.

When it is desiredto have a record played the operator manipulates the handle to turn the lever 9 about its pivot g as indicated by dotted lines in Fig. 6. Thisactuates thearm h, because of the contact of the end of the lug g therewith, to press said arm to aposition in which the shoulder 7L thereon will be engaged by the tooth 7' on the arm j and held in such a position that the tooth h, is interposed in the line of travel of the lug g which will therefore engage said'lug and hold the lever g in the position shown in r Fig. 2, with the pad 1 out of engagement with the flange a3.

7 in engagement with the armh. is a I surfa'cesomewhat elevated from the average surface of the outer edge of the arm 1* and The spring 7L acts to hold the tooth in engagement with the shoulder h on the arm h; When in this position the shoulder h engages the lower edge of the arm j* and holds the bell-crank lever in a position indicated by dotted lines in Fig. 6, a little further along in the line of travel of the arm 0 than it is in the engagedposition shown in full lines in Fig. 6.

' Before the brake g is released and set at its disengaged position andwhile the parts are in the position shown in full lines in Fi 6 the tone-arm b is thrown outward until the arm a strikes against the lug. a turning it, say, to the position shown in Fig. 5. The tone-arm is then moved to its inner position where the needle 6 is in thelast groove of by the inturned portion 72. of the arm h engaging the surface j on the arm jt.

The tone-arm 'b is then turned until. the

needle?) engages in the outer groove of the record. and the brake g is released and set as shown in Figure 2 sothatthe apparatus is set in motion. V

In playing the record the tone-arm Z) grad ually moves inward along the rotating record and over the record-carrying table a.

hen the tone-arm is approaching the end of the record the arm 6 will not be quite in contact with the arm 7' because the latter has moved backward from' its previous position to the position indicated in dotted lines in Fig. 6 consequently the y is held against the action of the arm .0

record will be completely played to the end and the needle 6 Wlll be. completely clear" gagement with the shoulder h? permitting the arm 7i to turn about its'pivot li under the inlluence of the tension ofthe spring 755 until the outer end of the arm it strikes against the shoulder j rising from the outer edge of the, arnry at the commencement of the engaging surface jin this position the lug 72. has been withdrawn from the line of travel of the lug g andthelever g is turned about its pivot g by the spring 9 thus engaging the pad 9 with the flange a and stoppingand holding from rotation the record-carrying disk to. hen the arm 6 is withdrawn from Contact with the arm 7' the arm j turns under the influence ofv in Figure 6. There is necessarily some lost.

motion in the jointsand points of contact m an apparatus of this kind't-and when the arm 6 is set to its operative position con tact with the arm the point of tripping would be somewhat advanced from such set position due to the lost motion and resilience of the parts, therefore I have provided for advancing the position of the arm 7' and amount suilicient to compensate for such eiiect.

The engaging lug 72/ is muchcloser jto the pivot 7 of the arm or catch it than is the point of engagement to hold said arm in its engaged position, therefore the "forces in the latter position are much less and a more delicate construction may be used and when this latter engagement is released the spring carries the arm it quickly to a position to loosen the stronger engagement between the arm '72, and the arm g.

What I claim is: i

1. in a phonograph having a record-carrying part, and a tone-arm, an adjustable actuating arm carried b said tone-arm, said actuating arm being adapted to be moved to different positions and to retain sufficient resistance to turn when it is moved for the purpose described, a device adapted to engage the record-carrying part to hold the same from movement, a catch device having an interposed part adapted to hold said engaging part in its disengaged position or to release the same to permit it to engage the recordcarrying part, said catch device having a part interposed in the line of travel of said actuating arm so that said interposed part shall be slightly nearer the tone-arm in the disengaged position of said catch device than in the engaged position of the same, said actuating arm being adapted to strike against said interposed part to release said catch device and to be set to a proper actuating position by said interposed part in the disengaged position of the catch device.

2. The combination of a phonograph having a record-carrying part and a tone-arm, an engaging part adapted to hold said rec- (ml-carrying part from movement or release the same, a pivoted catch having a tooth adapted to hold said engaging part in its disengaged position, and engaging and disengaging means acting upon said catch at a greater distance from its pivot than said tooth for holding said catch in position to retain sai i engaging part in its disengaged position, and means carried by said tonearm for disengaging the holding means of said catch.

in a phonograph having a record-carrying part, and a tone-arm, an adjustable actuating arm carried by said tone-arm, said actuating arm being adapted to be moved to differ-en positions and to retain sufiicient 'ance to turn when it is moved for the purpose described, a device adapted to eng e the record-carrying part to hold the same from mrm-nncnt, a catch device having an interposed part adapted to hold said engaging part in its disengaged position or to release the same to permit it to engage the record-carrying part, said catch device having a part interposed in the line of travel 01 said actuating arm so that said interposed part shall be slightly nearer the tone-arm in the disengaged position of said catch device thanin the engaged position of the same, said actuating arm being adapted to strike against said interposed part to release said catch device and to be set to a proper actuating position by said interposed part in the disengaged position of the catch device, and a lug adapted to engage said actuating arm toward the outer travel of the tone-arm, to adjust said actuating arm to a position to be set by contact with said interposed part.

at. The combination of a phonograph having a record-carrying part and a tone-arm, an engaging part adapted to hold said rec- .ord-carrying part from movement or release the same, a pivoted catch having a tooth adapted to hold said engaging part in its disengaged position, means for engaging and disengaging said catch and means carried by said tone-arm for disengaging the engaging means of said catch.

5. In a phonograph having a record-carrying part, and a tone-arm, an adjustable actuating arm carried by said tone-arm, said actuating arm being adapted to be moved to difi'erent positions and to retain suflicient resistance to turn when it is moved for the purpose described, a device adapted to engage the record-carrying part to hold the same from movement, a catch device having an interposed part adapted to hold said engaging part in its disengaged position or to release the same to permit it to engage the record-carrying part, said catch device having a part interposed in the line of travel of said actuating arm so that said interposed part shall be slightly nearer the tone-arm in the disengaged position of said catch device than in the engaged position of the same, said actuating arm being adapted to strike against said interposed part to release said catch device and to be set to a proper actuating position by said interposed part in the disengaged position of the catch device, and an automatic retaining device for holding said catch device in one position and in the other. V

6. In combination with a phonograph having a record-carrying part, a spring actuated brake for said carrying-part, a lever arm having a catch thereon for retaining said brake device in its disengaged position, a second lever arm having acatch for retaining the first named lever arm in its engaging position, said second arm having a part interposed in the line of travel of an extension from the tone-arm, the first named arm being adapted to engagesaid second arm to I part attached to the tone-arm, the partpreventits movement under the actuation of the extension from the tone-arm at a posi-' tionin advance of the tripping position.

7. In an apparatus of the kind described in combination with a record-carrying part, a brake g, a lever arm h adapted to catch and retain said brake in its disengaged position, a bell-crank lever j having an arm j" engaged by the arm 7L, and a second arm extending into position to be. actuated'by 2v ing provided with an engaging arm j 'IaV- mg a catch 3 and a shoulder y and an eievated surface 1', the arm It being adapted to engage the arm j for the purpose described.

In'testlmony whereof, I slgn this SPGClfication.

' EDD o. OLIVER. 

